GB148410A - Improvements in submarine sound receiving devices - Google Patents

Improvements in submarine sound receiving devices

Info

Publication number
GB148410A
GB148410A GB20355/20A GB2035520A GB148410A GB 148410 A GB148410 A GB 148410A GB 20355/20 A GB20355/20 A GB 20355/20A GB 2035520 A GB2035520 A GB 2035520A GB 148410 A GB148410 A GB 148410A
Authority
GB
United Kingdom
Prior art keywords
diaphragm
strengthened
electro
frequency
tuned
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB20355/20A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Signal GmbH
Original Assignee
Signal GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Signal GmbH filed Critical Signal GmbH
Publication of GB148410A publication Critical patent/GB148410A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K13/00—Cones, diaphragms, or the like, for emitting or receiving sound in general

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)

Abstract

148,410. Signal Ges. Sept. 8, 1915, [Convention date]. Addition to 147,936. Subaqueous audible signals.-In apparatus for receiving subaqueous sound vibrations, a diaphragm is used tuned to a frequency lower than that to be received, and, to prevent vibration at the higher frequency with a nodal line or ring, the diaphragm is thickened or strengthened with ribs at the parts where the nodes would otherwise occur, as described in the parent Specification. Fig. 4 shows a diaphragm E strengthened with radial ribs R, leaving unstrengthened zones Za, Zi respectively round the periphery, and near the middle. An oscillating structure tuned to the signalling frequency and carried by the diaphragm comprises two masses m<1>, m<2> on an elastic rod or rods S, and a microphone j, the leads of which pass out of the casing A through a stuffing-box K. A modified form is described in which the oscillating structure is a tuning fork having its stem connected to the diaphragm and a microphone mounted between the prongs. An electro-magnetic form of receiver is described, the construction of which is similar to the electro-magnetic transmitter described in the parent Specification. The invention may be applied to non-circular diaphragms.
GB20355/20A 1915-09-08 1920-07-10 Improvements in submarine sound receiving devices Expired GB148410A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE148410X 1915-09-08

Publications (1)

Publication Number Publication Date
GB148410A true GB148410A (en) 1921-10-10

Family

ID=5672660

Family Applications (1)

Application Number Title Priority Date Filing Date
GB20355/20A Expired GB148410A (en) 1915-09-08 1920-07-10 Improvements in submarine sound receiving devices

Country Status (1)

Country Link
GB (1) GB148410A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6501088B1 (en) * 1999-07-02 2002-12-31 Agfa-Gevaert Method and apparatus for reading a radiation image that has been stored in a photostimulable screen

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6501088B1 (en) * 1999-07-02 2002-12-31 Agfa-Gevaert Method and apparatus for reading a radiation image that has been stored in a photostimulable screen

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